OCULUM VERLAG - Hobby-Astronom in 4 Schritten (German edition)

Please note that this astronomy book for beginners is only available in German.

BRESSER Viewfinder Adjustment Screws 5mm (1 pc.) white Category: Spare Part suitable for Messier Telescope Series Description: The spare adjustment screw (1 piece) with a diameter of 5mm enables precise setting and optimal alignment of the viewfinder for the BRESSER Messier Telescope series.

Who doesn't dream of exploring the vastness of the universe with their own eyes? This complete telescope set comes with everything you need for your journey to open star clusters and distant emission nebulae: an astronomical reflecting telescope with 114 mm aperture and 500 mm focal length, an equatorial mount, a tripod and extensive accessories for astronomical observations. You can immediately start your very own adventure in astronomy, because the system is very easy to handle and transport. Especially wide-field observations in the Milky Way are a joy to watch through the beginner's telescope. A classic for a start - the telescope With the classic reflector telescope, a so-called Newtonian reflector, you’ll achieve a successful start in sky observation. A special feature of this type of telescope is that you don’t look in at the back of the telescope, but at the side in the front. The advantage is the comfortable observation position. So you don't have to bend down when the entry-level telescope is pointed vertically into the sky. In terms of optics, these reflecting telescopes are impressive in that they are absolutely free of chromatic aberrations and offer good imaging properties.  With its 114 mm aperture, the entry-level telescope already collects a lot of light from celestial objects. In addition, 114 mm aperture and 500 mm focal length result in a very short focal ratio (ratio of the aperture to the focal length) of about 1 to 4.4 (F/4.4). This causes the telescope to be very fast and to deliver an extremely bright image. The fast focal ratio and the short focal length cause the telescope to be a specialist for observing structures in the Milky Way and extended gas nebulae, for example the North America Nebula NGC 7000. This way a ''walk'' through the Milky Way with low magnification is simply a lot of fun. And you can choose the perfect place for it, because the entry-level telescope is very compact and therefore easily transported. And how closely will you be able to look? The aperture of 114 mm offers a resolving power that allows magnifications of up to about 230x with sharp images. Technically, even higher magnifications are possible - theoretically up to 375x by using the included accessories. However, as the magnification increases, the sharpness of the image may slowly decrease. Of course, it is not only your telescope that determines how much you can magnify. The air turbulence in the atmosphere (seeing conditions) is also an important factor. Note for nature lovers: If you choose a Newtonian telescope like the Pluto reflector telescope, you can look forward to a specialist in astronomical observation. However, the image is always displayed sideways as well as upside down, which makes no difference when observing the sky. However, this type of telescope is less suitable for nature and landscape observations during the day. Would you also like to use your new telescope for exciting nature discoveries? Then we recommend that you choose one of the BRESSER refractor telescopes. The perfect foundation for your astro-start - mount and tripod Have you found the ideal location for your celestial observations? Then simply attach the telescope tube to the height-adjustable tripod with equatorial mount. It makes tracking particularly easy, because in contrast to an azimuthal mount, you do not need to move both axes at the same time. So you simply align one axis parallel to the Earth's axis by pointing it approximately at Polaris. This process is called ''alignment''. After that, you track your celestial bodies only on this one axis. Another plus of the mount are the two flexible shafts with fine adjustment. They make adjusting and tracking the beginner's telescope particularly precise and comfortable. Very handy: A storage plate mounted between the tripod legs allows easy access to your accessories.Keep track of things automatically: For this telescope’s equatorial EQ-3 mount, the tracking motor with item number 4951400 is available as an optional accessory. This eliminates the need to manually track a celestial object set in the telescope. When this motor is installed at the mount, it automatically tracks the celestial object, keeping it in the field of view of the eyepiece. This makes observing the night sky even more comfortable! Everything included - the accessories Unpack, set up and start your journey of discovery across the night sky right away – for this purpose the astronomy set comes with all the necessary accessories. Get the perfect overview with the LED viewfinder. To do this, the viewfinder is simply installed parallel to the actual telescope. Turned on, it projects a red dot onto a small ground-glass screen. Look through it and it appears to hover in front of the night sky in exactly the direction in which you have aligned your entry-level telescope. Thus precise telescope alignment and finding celestial objects becomes child's play when you are using the LED viewfinder. A larger field of view or more details? With the two eyepieces (4 mm and 20 mm) you can admire the objects in different magnifications. The 3x Barlow lens goes one better: it allows you to triple the magnification of the eyepieces. But it doesn't have to stop there: If you ever want to expand your astronomy set, you can choose from a variety of additionally available eyepieces. After all, the socket diameter of 31.7 mm (1.25 inch) follows an international and manufacturer-independent standard. Observe the star of our daytime sky completely safely – to this end a solar filter is included with the entry-level telescope. Take a closer look at the sunspots and marvel at the granulation on our very own star. CAUTION: Never point the telescope at the Sun without the solar filter! For quick snapshots of special discoveries, grab the smartphone camera adapter. This way you can delight yourself and your friends again and again with fascinating astrophotos, for example of the Moon or the Sun. FEATURES Reflector telescope for beginners with 114 mm aperture and 500 mm focal length Reflector type Newton Ideal for observing the Milky Way and extended gas nebulae at low magnifications Height-adjustable tripod with equatorial EQ3 mount Easy to use, very good for beginners Focal ratio F/4.4, therefore very fast and bright image Very compact, easy to transport 31.7 mm eyepiece extension (1.25 inch) Two eyepieces and one Barlow lens with 31.7 mm (1.25 inch) focusers for different magnifications Safe solar observation with the included solar filter Entry into astrophotography with smartphone camera adapter SCOPE OF DELIVERY Telescope Aluminium tripod Equatorial EQ3 mount Eyepieces: 4 mm and 20 mm (1.25-inch socket) Barlow lens 3x (1.25-inch socket) LED illuminated dot finder Solar filter Smartphone camera adapter Accessory tray Astronomy software download Instruction manual